Order Scorpiones Koch, 1837 - scorpions
Family Chactidae Pocock, 1893
01 Genus Antridiscalceatus Rossi, 2018
02 Genus †Araripescorpius Bouret Campos, 1986
03 Genus Auyantepuia González-Sponga, 1978
04 Genus Broteochactas Pocock, 1893
05 Genus Brotheas Koch, 1837
06 Genus Chactas Gervais, 1844
07 Genus Chactopsis Kraepelin, 1912
08 Genus Chactopsoides Ochoa, Rojas-Runjaic, Pinto-da-Rocha & Prendini, 2013
09 Genus Guyanochactas Lourenço, 1998
10 Genus Hadrurochactas Pocock, 1893
11 Genus Megachactops Ochoa, Rojas-Runjaic, Pinto-da-Rocha & Prendini, 2013
12 Genus Neochactas Soleglad & Fet, 2003
13 Genus Nullibrotheas Williams, 1974
14 Genus Spinochactas Lourenço, 2016
15 Genus Teuthraustes Simon, 1878
16 Genus Vachoniochactas González-Sponga, 1978